Gennadiy N. Lepeshkin: In response to that question I would say the following. Well, in the whole... among my colleagues and those whom I knew, there was not a single case of disease or death. As a rule, when you study the literature and learn about the procedures... in the cases where staff were infected, there was primarily one single reason: the human factor. This is an important reason. The person himself or herself at some point violated safety requirements and as a result an infection occurred. Followed, perhaps, in some cases, by disease and death.